CN206035802U - Low viscosity high pressure's spiral shell sucker -rod pumping - Google Patents
Low viscosity high pressure's spiral shell sucker -rod pumping Download PDFInfo
- Publication number
- CN206035802U CN206035802U CN201620961726.6U CN201620961726U CN206035802U CN 206035802 U CN206035802 U CN 206035802U CN 201620961726 U CN201620961726 U CN 201620961726U CN 206035802 U CN206035802 U CN 206035802U
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- pump
- screw
- screw rod
- driven
- high pressure
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- 238000005086 pumping Methods 0.000 title abstract 3
- 230000006978 adaptation Effects 0.000 claims abstract description 6
- 230000013011 mating Effects 0.000 claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 42
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 239000003082 abrasive agent Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a low viscosity high pressure's spiral shell sucker -rod pumping, including the pump body, set up initiative screw rod, bearing, seal structure in the pump body, still be provided with driven screw in the pump body, bearing, seal structure cover are established on the initiative screw rod, pump body internal shaping has the pump chamber, and the axial is provided with the bush in the pump chamber, and initiative screw rod, driven screw set up in the bush, the bush is provided with the mating holes, the lateral wall meshing adaptation of driven screw's lateral wall and initiative screw rod, and the top inner wall of its both ends and pump chamber, bottom inner wall meet, and the inner wall of its both ends and pump chamber meets, the bottom unsettled pump chamber bottom inner wall setting of initiative screw rod. The utility model discloses can provide a simple structure, small, installation compact convenient, durable wear -resisting, pressure is high, it is little to let out in the flow, and can effectively strengthen the meshing screw rod pay bush inner wall surface abrasion -resistant durability can, reduced power energy consumption and improvement life's low viscosity high pressure's spiral shell sucker -rod pumping.
Description
Technical field
The utility model is related to screw pump field, more particularly to a kind of screw pump of low viscosity high pressure.
Background technology
Screw pump is to be engaged spatial volume change and movement to convey liquid or be allowed to by what the pump housing and screw rod formed
The drum pump of supercharging, screw pump are divided into single-screw (single screw) pump, Quimby pump and screw pump etc. by screw rod number.Its operation principle is when electricity
When motivation drives pump shaft to rotate, on the one hand screw rod is rotated around the axis of itself, and on the other hand it is rolled along sleeve inner surface again, in
It is the sealed chamber to form pump, its screw rod each rotation, the liquid in annular seal space push ahead a pitch, with the company of screw rod
Continuous to rotate, liquid spiral fashion presses to another annular seal space from an annular seal space, finally extrudes the pump housing.Screw pump is used as one kind
The machinery of new conveying liquid, with simple structure, safe and reliable, easy maintenance, to go out liquid continuous uniform etc. excellent
Point, therefore application commercially is widely.
Screw pump is used as fuel injection, fuel oil supply and delivery pump in heating equipment.In chemical petrochemical industry and food
Loading, conveying and solution feed pump are used as in industry.Conveying, supercharging, fuel oil injection and grease pump and peculiar to vessel are used as on ship
Hydraulic means pump.Screw pump is widely used in each row such as oil, chemical fibre, metallurgy, machinery, electric power, lathe, ship, glass, highway
Each industry.Screw pump is applied to the lubricating liquid of conveying fuel oil, lubricating oil, hydraulic oil, crude oil, pitch and other similar oil.
Screw pump makees lubricating pump in industrial circle, makees hydraulic pump in hydraulic system, conveys and booster pump in fuel system；
Convey in fuel transfer system and gasoline pump.Screw pump is rotator type displacement pump, and it is using the screw rod theory of engagement, by rotation
Screw rod is intermeshed in the pump block, and the medium for being conveyed is enclosed in engagement chamber, axially along a screw the continuously and smoothly ground row of being pushed into
Outlet, provides stable pressure for system.Screw pump is applied to the various non-corrosiveness oils of conveying and similar oil and lubricity liquid
Body.
Existing screw pump is because structure design, process materials selection and the restriction of problems, have structure not
It is enough simple compact durable, when causing work the screw rod of driving screw rod and driven screw engagement ship row when axial force and centrifugation
Power, radial load are excessive, and power is high, flimsy problem.Low-viscosity media is conveyed especially such as：Coolant, emulsion, saponification
During the mixture conditions such as liquid, cooling oil, grinding fluid, cooling water, less economy and durability.
Utility model content
The purpose of this utility model is to provide a kind of simple structure, small volume, install compact convenience, durable wear-resistant, pressure
Let out little in high, flow, and can effectively strengthen engagement screws and pay the wear-resisting durable performance of bushing inner wall surface, reduce power energy consumption
With the screw pump of the low viscosity high pressure for improving service life.For vast auto parts and components manufacturer and wind-driven generator wheel-box
Manufacturer and high accuracy equipment manufacturing business greatly reduce the loss of cutter knife, improve part finished surface crudy
And working (machining) efficiency.Benefit is dramatically increased for more mechanized equipment manufacturing enterprises.
The utility model solves the technical scheme adopted by its technical problem：A kind of screw pump of low viscosity high pressure,
Including the pump housing, driving screw rod in the pump housing, bearing, sealing structure are arranged on, are additionally provided with the pump housing and are mutually nibbled with driving screw rod
The driven screw properly matched somebody with somebody, bearing, sealing structure are set in driving screw rod；Pump housing internal shaping has pump chamber, axially sets in pump chamber
Bushing is equipped with, driving screw rod, driven screw are arranged in bushing；Bushing is provided with and is adapted with driven screw, driving screw rod
Mating holes；In the side wall engagement adaptation of the side wall and driving screw rod of driven screw, and the top inner wall of its two ends and pump chamber, bottom
Wall connects, and the inwall of its two ends and pump chamber connects；The hanging pump chamber bottom interior wall in bottom of driving screw rod is arranged.
In order that driven screw two ends are isobaric, the phase mutual friction of driven screw and suction inlet end face is reduced, reduces power,
Improve service life, the axially arranged liquid-through hole having through whole bar of driven screw.
In order to reduce frictional force increase problem caused by the circular runout of driven screw, pump chamber bottom is provided with by wear-resisting material
Location sealing set made by material, driven screw bottom device is in location sealing set.
In order to reduce frictional force increase problem caused by the circular runout of driven screw, pump chamber bottom is provided with and driven spiral shell
The balance weight that bar is adapted.
The validity of driving screw rod shaft end sealing, reduces sealing cavity pressure, reduces friction, reduces power, and raising uses the longevity
Life, driving screw rod shaft are provided with one section of labyrinth sealing, and labyrinth sealing and sealing structure connect away from one end of bearing.
Further, driven screw is provided with two, and the axle of driving screw rod and two driven screws is generally aligned in the same plane；The pump housing
Upper setting suction inlet and outlet；Pump chamber is double eight word cavitys, and the mating holes on bushing is double eight words, three holes, double eight words accordingly
Three holes include the driving screw rod hole being adapted with driving screw rod, and two driven screw holes that driven screw is adapted；Active spiral shell
The effective working screw of bar is all wrapped in the driving screw rod hole in double eight words, three holes, driven screw then from driven screw hole always
Extend to suction inlet end face.
In order to bushing has good self-lubricating property, the frictional force of screw and bushing inwall is reduced, and is effectively dropped
The vibrations of low pump, bushing are bushing of the inwall through ceramic treatment.
In order to improve service life, hardened steel or carbon that driving screw rod, driven screw, balance weight three were processed by stiffened
SiClx or wolfram steel are made.
Preferably, the aperture of liquid-through hole is 0.3-6mm.
In order to meet the demand of different operating modes, sealing structure is mechanical seal or J-type cap sealing ring.
The beneficial effects of the utility model：The relatively existing screw pump of the screw pump of this low viscosity high pressure, reduces existing
The axle sleeve with driven screw video is set in higher-pressure region in having technology so that structure is simpler, compact.By driving screw rod band
Dynamic driven screw, and the hanging pump chamber bottom interior wall setting in bottom of driving screw rod, so can be with effectively solving because of driven screw
Axial force and the excessive and caused not wear-resisting durable problem of radial centrifugal force.Driven screw is axially arranged to be had through the logical of whole bar
Fluid apertures, pump chamber bottom are provided with the balance weight connected with driven screw so that driven screw two ends are approximately isobaric, reduce to balance
The friction of block, can effectively reduce power, play the purpose of energy-conservation, while service life can be improved.Driving screw rod shaft sets
One section of labyrinth sealing is equipped with, labyrinth sealing is provided for a long term extra pressure compensation, reduces the pressure of annular seal space, and reduction rubs
Wipe, reduce power, being capable of energy-conservation and raising service life.The bushing of ceramic treatment has good self-lubricating property, reduces
The frictional force of screw and bushing inwall, and lower the vibrations of pump.The hardened steel processed by stiffened or carborundum or wolfram steel system
Into driving screw rod, driven screw, balance weight, increase the service life feature with highly abrasion-resistant.
General pump class product high pressure conveying low viscosity, dirty medium are solved as containing fine metal particles or grinder wheel
Not wear-resisting fragile frequent replacing pump and the knife of not being durable of the coolant of ash, emulsion, saponification liquor, grinding fluid, cooling oil, cooling water
Uneconomic problem caused by tool.Substantially increase the crudy and production efficiency of cutting-tool's used life and parts.Especially
Which is in deep hole drilling machine, numerically controlled tooth grinding machine, crankshaft grinding machine, wind-driven generator wheel-box processing, the manufacture of high-accuracy hydraulic part, vapour
Car parts：The field such as precision gear and bent axle, motor body reaches favor and extensively applies.Such that it is able to be applied to numerical control
Chip removal, chip breaking field are rinsed in the cooling of machining tool high pressure.
Below with reference to drawings and Examples, the utility model is described in detail.
Description of the drawings
Fig. 1 is structural representation of the present utility model.Wherein sealing structure 9 is J-type cap sealing ring.
Fig. 2 is another structural representation of the present utility model.Wherein 9 mechanical seals of sealing structure.
Partial enlarged drawings of the Fig. 3 for A positions.
Specific embodiment
Embodiment, a kind of screw pump of low viscosity high pressure as shown in Figure 1, Figure 2, Figure 3 shows, including the pump housing 1, are arranged on pump
Driving screw rod 2, bearing 8 in body 1, sealing structure 9, are additionally provided with the pump housing and are intermeshed the driven of adaptation with driving screw rod 2
Screw rod 3, bearing 8, sealing structure 9 are set in driving screw rod 2；1 internal shaping of the pump housing has pump chamber 4, and lining is axially provided with pump chamber 4
Set 5, driving screw rod 1, driven screw 2 are arranged in bushing 5；Bushing 5 is provided with and matching somebody with somebody that driven screw, driving screw rod are adapted
Close hole；The side wall engagement adaptation of the side wall and driving screw rod 2 of driven screw 3, and top inner wall, the bottom of its two ends and pump chamber 4
Inwall connects；Hanging 4 bottom interior wall of pump chamber in bottom of driving screw rod 2 is arranged.Driving screw rod 2 drives 3 synchronous axial system of driven screw.
Driven screw 3 is provided with two, and the axle of driving screw rod 2 and two driven screws 3 is generally aligned in the same plane.Suction is set on the pump housing 1
Mouth and outlet；Pump chamber 4 is double eight word cavitys, and the mating holes on bushing 5 is double eight words, three holes accordingly, and double eight words, three holes include
The driving screw rod hole being adapted with driving screw rod 2, and two driven screw holes that driven screw is adapted.Driving screw rod 2 is effective
Working screw is all wrapped in the driving screw rod hole in double eight words, three holes, and driven screw 4 then extends always from driven screw hole
To suction inlet end face.
4 bottom of pump chamber is provided with the set of the location sealing by made by high-abrasive material 17 connected with driven screw 3.High-abrasive material
Carborundum can be selected.High pressure power media introduces suction inlet to offset while the axial force of driven screw 3, takes carborundum
Or the location sealing set 17 of 3 low-pressure area of driven screw made by other high-abrasive materials, it is possible to reduce flow and pressure leakage, and give
Driven screw 3 and location sealing cover the cooling of 17 friction parts, while being rotated into conduct to calmly to the high speed of two driven screws 3
Position, it is ensured that two driven screws 3 do good rotary motion on its axial line, to improve the energy of the anti-sideslip of driven screw 3
Power, so as to greatly enhance its wearability.
In order that bushing 5 has good self-lubricating property, the frictional force of 5 inwall of screw and bushing is reduced, and effectively
The vibrations of pump are reduced, bushing 5 is bushing of the inwall through ceramic treatment.High molecular abrasion-proof material is added to be allowed to penetrate into bushing 5
Inwall has good self lubricity and durable wear.Driving screw rod 2, driven screw 3, location sealing set 17 are by stiffened process
The hardened steel crossed or carborundum or wolfram steel are made.Can strengthen resisting the frictional dissipation of driven screw 3.
Sealing structure 9 is mechanical seal or J-type cap sealing ring.2 shaft of driving screw rod is provided with one section of labyrinth sealing 7,
Labyrinth sealing 7 and mechanical seal 9 or J-type cap sealing ring connect away from one end of bearing 8.The labyrinth sealing 7 is setting
One group of ring packing teeth for once arranging on 2 outer wall of driving screw rod, forms one between ring packing teeth and ring packing teeth
Serial throttle clearance and expansion cavity, sealed medium produce throttle effect at the gap by tortuous labyrinth and reach Drain Resistance
Purpose.Labyrinth sealing 7 combines J-type cap sealing ring or mechanical seal 9 is used, and can apply to more operating modes.Such as labyrinth
Formula sealing 7 can be applicable to suspension type in water tank and install, and a little leakage is directly entered fuel tank and does not pollute the environment, and J-type cap is close
Seal cost is lower, greatly reduces purchase cost；Mechanical seal 9 can be applicable to the dry type installation that water tank is got angry outside water tank, really
Guarantor does not leak.
In order that 3 two ends of driven screw are isobaric, the phase mutual friction of driven screw 3 and suction inlet end face is reduced, reduce energy
Wasted work rate, improves service life, the axially arranged liquid-through hole 16 having through whole bar of driven screw 3；Can also say in being driven screw 3
Heart axial design has from higher-pressure region to low-pressure area connection or through the liquid-through hole 16 of whole driven screw 3.The aperture of liquid-through hole 16
For 0.3-6mm.Liquid-through hole 16 offsets axial direction when driven screw 3 runs to the high pressure for introducing higher-pressure region by hydro-cushion
Power.The design that similar functions are played with liquid-through hole 16 can also be：Via the pump housing 1 individually perforation quote or from higher-pressure region housing or
Outside bearing block, high pressure is introduced suction inlet low-pressure area by drilling connection high-voltage tube.
Embodiment 2, except 4 bottom of pump chamber is provided with the balance weight that driven screw 3 is adapted, rather than location sealing set 17
In addition, remaining is with embodiment 1.Hardened steel that balance weight was processed by stiffened or carborundum or wolfram steel are made.
The flow of the screw pump of low viscosity high pressure is 1-1000 liter/min, operating pressure 1-15Mpa, and inlet pressure is most
Big 2Mpa, 130 DEG C of operating temperature highest, kinematic viscosity 1-25002。
The utility model is exemplarily described above in association with accompanying drawing.Obviously, the utility model is implemented not
Limited by aforesaid way.As long as employ the various unsubstantialities that method design of the present utility model and technical scheme are carried out
Improvement；Or it is not improved, above-mentioned design of the present utility model and technical scheme are directly applied to into other occasions, at this
Within the protection domain of utility model.
Claims (10)
1. a kind of screw pump of low viscosity high pressure, including the pump housing (1), is arranged on driving screw rod (2) in the pump housing (1), bearing
(8) driven screw (3) that adaptation is intermeshed with driving screw rod (2), bearing are additionally provided with, sealing structure (9), the pump housing (1)
(8), sealing structure (9) is set in driving screw rod (2)；The pump housing (1) internal shaping has pump chamber (4), and pump chamber is axially provided with (4)
Bushing (5), driving screw rod (2), driven screw (3) are arranged in bushing (5)；Bushing (5) is provided with and driven screw, active spiral shell
The mating holes that bar is adapted；It is characterized in that：The side wall engagement adaptation of the side wall and driving screw rod (2) of driven screw (3), and its
The top inner wall of two ends and pump chamber (4), bottom interior wall connect；Bottom hanging pump chamber (4) bottom interior wall of driving screw rod (2) sets
Put.
2. the screw pump of low viscosity high pressure according to claim 1, it is characterised in that：Driven screw (3) is axially arranged
There is the liquid-through hole (16) through whole bar.
3. the screw pump of low viscosity high pressure according to claim 1 and 2, it is characterised in that：Pump chamber (4) bottom is provided with
Location sealing set (17) by made by high-abrasive material, driven screw (3) bottom device is in location sealing set (17).
4. the screw pump of low viscosity high pressure according to claim 1 and 2, it is characterised in that：Pump chamber (4) bottom is provided with
The balance weight being adapted with driven screw (3).
5. the screw pump of low viscosity high pressure according to claim 1 and 2, it is characterised in that：Driving screw rod (2) shaft sets
One section of labyrinth sealing (7) is equipped with, labyrinth sealing (7) and sealing structure (9) connect away from one end of bearing (8).
6. the screw pump of low viscosity high pressure according to claim 3, it is characterised in that：Driven screw (3) is provided with two
The axle of root, driving screw rod (2) and two driven screws (3) is generally aligned in the same plane；Suction inlet and outlet are set on the pump housing (1)；
Pump chamber (4) is double eight words cavitys, and the mating holes on bushing (5) is double eight words, three holes accordingly, and double eight words, three holes include and active
The driving screw rod hole that screw rod (2) is adapted, and two driven screw holes that driven screw (3) is adapted；Driving screw rod (2) is effectively
Working screw is all wrapped in the driving screw rod hole in double eight words, three holes, and driven screw (3) then prolongs always from driven screw hole
Reach suction inlet end face.
7. the screw pump of low viscosity high pressure according to claim 1, it is characterised in that：Bushing (5) is inwall through making pottery
The bushing of porcelainization process.
8. the screw pump of low viscosity high pressure according to claim 3, it is characterised in that：Driving screw rod (2), driven screw
(3) hardened steel that, location sealing set (17) three was processed by stiffened or carborundum or wolfram steel are made.
9. the screw pump of low viscosity high pressure according to claim 2, it is characterised in that：The aperture of liquid-through hole (16) is
0.3-6mm。
10. the screw pump of low viscosity high pressure according to claim 5, it is characterised in that：Sealing structure (9) is close for machinery
Envelope or J-type cap sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620961726.6U CN206035802U (en) | 2016-08-26 | 2016-08-26 | Low viscosity high pressure's spiral shell sucker -rod pumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620961726.6U CN206035802U (en) | 2016-08-26 | 2016-08-26 | Low viscosity high pressure's spiral shell sucker -rod pumping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035802U true CN206035802U (en) | 2017-03-22 |
Family
ID=58304674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620961726.6U Active CN206035802U (en) | 2016-08-26 | 2016-08-26 | Low viscosity high pressure's spiral shell sucker -rod pumping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
| DE102017121882B3 (en) | 2017-09-21 | 2019-01-24 | Leistritz Pumpen Gmbh | Screw Pump |
-
2016
- 2016-08-26 CN CN201620961726.6U patent/CN206035802U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
| DE102017121882B3 (en) | 2017-09-21 | 2019-01-24 | Leistritz Pumpen Gmbh | Screw Pump |
| US10975864B2 (en) | 2017-09-21 | 2021-04-13 | Leistritz Pumpen Gmbh | Screw pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231016 Address after: 242700 No. 59, Meilin Avenue, Huangshan high tech Industrial Development Zone, Anhui Province Patentee after: Mount Huangshan Aike Equipment Technology Co.,Ltd. Address before: No. 147, Xinxing 3rd Road, Chengbei Industrial Park, Mount Huangshan City, Anhui Province, 245000 Patentee before: HUANGSHAN AIKEN MACHINERY MANUFACTURING CO.,LTD. |
|
| TR01 | Transfer of patent right |